What is the formula for the following geometric sequence?

-5, -10, -20, -40, ...

an = 2 · (-5) n - 1
an = -5 · (-2) n - 1
an = -5 · 2 n - 1
an = -2 · (-5) n - 1

Which statements regarding the diagram are true? check all that apply.

Adam plans to choose a video game from the section of the store where everything is 75% off. he writes the expression d-0.75d to find the sale price of the game if the original price is d dollars. gena correctly writes another expression, 0.25d, that will also find the sale price of the game if the original price is d dollars. use the drop down menus to explain each part of adams and rena's expression

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.